<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title>Document</title>
    <style>
        .a{
            height: 200px;
            width: 190px;
        }
        .small{
            background-image: url("../img/img_136.png");
            width: 15px;
            height: 15px;
            background-repeat: no-repeat;
            float: left;
        }
        .big{
            background-image: url("../img/img_54.png");
            width: 175px;
            height: 175px;
            background-repeat: no-repeat;
            float: right;
            display: table;
        }
    </style>
</head>
<body>
<div class="a">
    <div class="small"></div>
    <div class="big"></div>
</div>
<script>
    var s=document.querySelector('.small');
    var b=document.querySelector('.big');
    var a=document.querySelector('.a');
    s.onclick=function(){
        this.style.display='none';
        b.style.display='none';
    }
</script>
</body>
</html>
